透光抚育对阔叶混交林水源涵养功能的影响  

Effects of light-felling on water conservation of broad-leaved mixed forests

作　　者：汪成成[1] WANG Chengcheng(Liaoning Academy of Forestry,Shenyang 110032,China)

机构地区：[1]辽宁省林业科学研究院,辽宁沈阳110032

出　　处：《辽宁林业科技》2021年第4期21-23,53,共4页Liaoning Forestry Science and Technology

基　　金：辽宁省“兴辽英才计划”项目(XLYC1902081);国家重点研发计划项目(2017YFC050410504)。

摘　　要：在宽甸县振江富阳林场选择立地条件较好、林木分布均匀的近熟天然次生林,设置标准地,进行全透光(100%)、中度透光(32%)、强度透光(55%)和对照(未采伐,0%)的透光抚育试验,分析不同透光强度短期内(伐后4年)对阔叶混交林水源涵养功能的影响。结果表明:与对照相比,全透光抚育在短期内能够显著降低土壤容重,增加土壤最大持水量和非毛管持水量(P<0.05),其他处理与对照无显著差异(P>0.05)。在枯落物层水源涵养方面,与对照相比,全透光和强度透光抚育显著降低了枯落物的蓄积量和最大持水量(P<0.05),中度透光抚育对枯落物的蓄积量和最大持水量影响不显著(P>0.05)。The near-mature natural secondary forests with better site conditions and uniform tree distribution was selected in Zhenjiangfuyang Forest Farm,Kuandian County.Several plots were set to carry out light-felling experiments with full light-felling(100%),moderate light-felling(32%),heavy light-felling(55%)and control(0%).The effects of different light-felling intensity on water conservation of broad-leaved mixed forests in a short period(4 years after cutting)were compared and analyzed.In terms of soil water conservation,compared with the control,the soil bulk density of full light-felling significantly decreased and the soil maximum water holding capacity and its non-capillary water holding capacity also increased(P<0.05),however,there was no significant difference between other treatments and control(P>0.05).In terms of water conservation of litter layer,compared with the control,the litter accumulation and its maximum water holding capacity of full light-felling and heavy light-felling significantly decreased(P<0.05),while moderate light-felling had no significant effect on litter accumulation and its maximum water holding capacity(P>0.05).

关 键 词：透光抚育 阔叶混交林 枯落物 水源涵养 

分 类 号：S791[农业科学—林木遗传育种]